/Engine/Source/Runtime/Engine/Public/PluginBlueprintLibrary.h
Get the filesystem path to a plugin's content directory.
true if the named plugin was found and the plugin content directory filesystem path was stored in OutContentDir, or false otherwise
static bool GetPluginContentDir ( const [FString](API\Runtime\Core\Containers\FString) & PluginName, [FString](API\Runtime\Core\Containers\FString) & OutContentDir )